Light tester



FIG. 1 is a front view of a light tester showing my new design;

FIG. 2 is a rear view of the light tester;

FIG. 3 is a right side view of the light tester;

FIG. 4 is a left side view of the light tester;

FIG. 5 is a top view of the light tester;

FIG. 6 is a bottom view of the light tester; and,

FIG. 7 is a bottom front side perspective view of the light tester.

The broken lines shown in the drawing figures indicate structure which forms no part of the claimed design. 

CLAIM The ornamental design for a light tester, as shown and described. 